Squareway Inertial Design positions discretionary weight to the extreme corners of the FT-i Squareway Wood clubhead, raising the MOI for unparalleled resistance to twisting. This provides straighter and more forgiving shots hit over a wide area of the face. Fusion Technology construction combines a stainless steel face, sole and body with a lightweight, carbon composite crown, allowing Callaway Golf engineers to move discretionary weight where it is needed most, resulting in better stability and distance.